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These ionic tattoos are highly valued for their biocompatibility, stability, and user\u2010experience comfortability. This research has focused on combining the environmentally stable and biocompatible green solvent with dynamically degradable and reusable polymer networks to develop a propylene glycol\u2010based supramolecular organogel (PGOG). It demonstrates an impressive elongation of 10\u2009400% at break. The photocured PGOG can be recycled on\u2010demand in water and formulated into a portable spray solution, which can be sprayed on the back of the hand just like a sunscreen spray, providing a seamless and comfortable fit that closely matches the skin's contours. Additionally, an integrated ionic circuit is designed with the capability of sensing temperature, humidity, and strain signals with the assistance of AI, demonstrating its potential application in intelligent artificial skin.<\/jats:p>","DOI":"10.1002\/smll.202501621","type":"journal-article","created":{"date-parts":[[2025,5,8]],"date-time":"2025-05-08T04:26:42Z","timestamp":1746678402000},"update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":6,"title":["Sprayable Ionic Tattoo Exploiting Biocompatible and Recyclable Organogel for AI\u2010Assisted Multisignal Sensing"],"prefix":"10.1002","volume":"21","author":[{"given":"Jinghao","family":"Zhu","sequence":"first","affiliation":[{"name":"Key Laboratory of Advanced Light Conversion Materials and Biophotonics School of Chemistry and Life Resources Renmin University of China  Beijing 100872 P. R. 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